Controllable head for golf putter

ABSTRACT

This invention relates to a controllable head to be used on the golf putter, in which the club shaft is divided into two sections, the upper shaft and the lower shaft, and linked together by a fork joint which provides a relative tendency of stability in sway of the upper shaft against the lower shaft so as to render the ball an accurate rolling course to enter the hole on the green.

FIELD OF THE INVENTION

The invention relates to a controllable head for the golf putter in which the club shaft is divided into two sections, the upper shaft and the lower shaft, and linked together by a fork joint which is easy the player to locate what is the tendency of the propulsion axis the ball will roll on so as to gain more accuracy in the ball rolling course.

BACKGROUND OF THE INVENTION

In the golf sports, there are two ways employed to hit the ball, the dynamic striking or the static propulsion, of these two; using putter to propel the ball is most important factor to win or lose the game, so the good skill or the poor skill to employ the putter is a judgment most golf players have to face.

As shown in FIG. 1, it is an appearance of a short putter, the shaft is rather short, and the top end has a gloved handle for the player to hold it with two hands. The head 12 has a wide face. The player holds the gloved handle 12 with two hands and places the putter in front of his breast. When he/she uses his/her body as pivot and employs two shoulders to swing two arms and finally hits the ball with the face 12 of the head 11 (it is called pendulum effect), the ball rolling on the green is caused. To control the rolling course of the ball depends largely on the center point of the face, the center point of the ball, and the center point of the hole aligned into an axial line. At the case of propelling the putter, it is inevitable to produce the possibility of sway when two shoulders swinging two arms, the alignment of axial line for the ball to roll is distorted, and a latent discouragement occurs in the player's heart.

As shown in FIG. 2, it is an appearance of a long putter. The shaft 10 is elongated by an upper handle 11A and a lower handle 11B. The player holds the upper handle 11A with one hand close to his breast and the lower handle 11B with the other hand rested on the belly. The body and the arm holding the upper handle 11A as a pivot are used in order to keep the body from swaying. Then a force is applied to the other hand that holds the lower handle 11B to propel the ball rolling on the green. In fact it has reduced the body away to the greatest extent, but there remains latent of inaccurate axial line for the ball to roll, thereby making the player disappointed.

From the above statement, it is well learned that the accuracy of the ball rolling line is closely related to the stroke axial line the head sways. The conventional technique properly employed for the putter requires long time training, adaptability, and improvement. For the golf beginner, fast learning to use the putter skillfully is an encouragement; which is the main purpose this invention is designed for.

SUMMARY OF THE INVENTION

The employment of the prior art of putter entails matured skill and harmony of body parts. The inventor, viewing this requirement, has been devoted with a great lot of efforts to implement of this invention through many trials and errors. The two sections of the shafts are linked with a fork joint having the tendency to swing. What is required is to control the stability of the upper shaft, and the fork joint will help the lower shaft to find the desirable propelling axial line, thereby adding more accuracy to the ball-rolling course.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows an outside view of a conventional short putter.

FIG. 2 shows an outside view of another conventional long putter.

FIG. 3 shows a disassembly view of a controllable head of the putter of this invention.

FIG. 4 shows a disassembly view of a controllable head of the putter of this invention.

FIG. 5 shows a schematic diagram of a controlled direction at the case of operation of the putter.

DETAILED DESCRIPTION OF THE INVENTION

The fork point of this invention will be explained in great detail by the aid embodiments as illustrated in the drawings.

Referring to FIGS. 3, 4, and 5, the controllable head of the putter mainly consists of two sections of shafts 20, 21 linked by the fork joint.

The upper shaft 20, same as the conventional part, has a cavity 201 and a grooved handle 22 for player to hold.

The lower shaft 21, same as the conventional part, has a cavity 211, a grooved handle 23, and a head 24 with a wide face.

The fork joint comprises a fixed head 30 and a moveable head 40. The fixed head has a joining post 31 on the top which ill enter the cavity 201 of the upper shaft 20. The fixed head 30 has a downward fork 32, a lock hole 33, and a bolt hole 34. The moveable head 40 has a downward post 41 entering into the cavity 211 of the lower shaft 21, a linking tongue 42, a lock hole 43, and a bolt hole 44.

As shown in FIG. 4, the tongue 42 of the moveable head 40 is inserted in the fork 32 of the fixed head 30 of the upper shaft 20 where a lock pin 50 will pass the lock hole 33 and the lock hole 43 on the fork 30 and the tongue 42 and where a bolt 51 passes the bolt hole 34 on the fork 30 and the bolt hole 34 on the tongue 42 to lock them together. This is the way to organize a long putter as shown in FIG. 2. When the bolt 51 is removed from the bolt hole 44 of the moveable head 40, the lock pin 50 will serve as a pivot, allowing the upper shaft 20 to swing at fixed angle. If the lower shaft 21 is swinging, the tongue 42 will swing at the limited direction the fork 32 of fixed head 30 offers. This will confine the boundary of swing axis. As shown in FIG. 5, when the player holds the grooved handle 22 of the upper shaft 20 with one hand in front of the breast, and with the hand on the grooved handle 23 of the lower shaft 21, as long as the fork 32 of the fixed head 30 is facing forward, a swing of the lower shaft 21 and the head 24 is limited. Simply speaking, when the player keeps his upper shaft 20 still and the fork facing forward, the ball hit will roll along course with accuracy.

Many changes and modifications in the above disclosed embodiment of the invention can, of course, be carried out without departing from the scope thereof, such the position of the lock hole and bolt hole of the fixed head and the moveable head. Accordingly, to promote the progress in science and the useful arts, the invention is disclosed and is intended to be limited only by the scope of the appended claims. 

1-2. (Canceled).
 3. A controllable head for a golf putter, comprising: a first shaft section; a second shaft section; a golf club head attached to an end of said second shaft section; and a fork joint disposed between said first shaft section and said second shaft section, and linking said first shaft section to said second shaft section, said fork joint including: a fixed head attachable to one of said first and second shaft sections, and including a forked portion, and a first lock hole and a first bolt hole formed in the forked portion; a movable head attachable to another one of said first and second shaft sections, and having a linking tongue that is engaged with the forked portion of said fixed head, and a second lock hole and a second bolt hole formed in the linking tongue, the second lock hole being in alignment with the first lock hole, and the second bolt hole being in alignment with the first bolt hole; a removable fastening member engagable with the first and second bolt holes, to rigidly fix the movable head to the fixed head; and a lock pin positioned to extend through the first and second lock holes, and forming a pivot about which the movable head is freely pivotal relative to the fixed head only when the fastening member is removed from the first and second bolt holes; wherein when the fastening member is engaged with the first and second bolt holes, the fastening member fixes the movable head to the fixed head to prevent pivoting thereof.
 4. The controllable head recited in claim 3, wherein said first shaft section and said second shaft section each have a respective cavity formed therein, and wherein the fixed head and the moveable head each have a respective post that enters into the respective cavities, to join said fork joint to said first and second shaft sections.
 5. The controllable head as recited in claim 1, wherein when said movable head pivots, said movable head moves in a direction essentially parallel to a face of said golf club head. 